1.  Orbits and Satellites - Click this link and select START THIS SIMULATION Experiment with different launch speeds until you find one that gives your rocket a circular orbit.  What speed finally gave the rocket a near circular orbit (with the earth exactly at the center of the circular orbit)? [Your answer is the BLUE number]  Fu-Kwun Hwang

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2. Newton's Cannon - Michael Fowler

a) Describe what happens when you give the satellite a velocity that is very large?

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b) What happens when you give the satellite a velocity that is very small? 

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c) What initial velocity (mph) will cause the object to orbit around the earth in a perfect circular path?

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3. Orbit - Give this one try!

4.  Resultant of Forces (Addition of Vectors)

Questions: 

a) What color is the resultant? _______________

b) How does the angle between the forces effect the size of the resultant?

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c) Arrange the size and angle between the vectors to produce a vector that is pointing vertically upward. Once you are successful, show how your vectors are arranged.

 

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5. Net Force - 3 forces

a) Grab force F3 with your mouse arrow and move it until the red resultant arrow becomes zero. Draw the picture below.

 

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b) How does the resultant of F1 and F2 compare to F3?  ____________________

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6.  Visual Vector Addition - "Head to Tail"

a) Grab the middle of the red vector and move it so its tail is connected to the head of the blue vector.  If you did everything right a vector should appear. Draw what you see.

 _________________________ What color is the resultant? ______________

7.  Inclined Plane (by Fendt)

*** Before you start this simulation***  

1) Select "Force Vectors" 2) Change the Coefficient of friction to .5

3) Select Start

Question a: What are the colors of the following forces:

friction -  ___________      weight force - ___________      

b) Find the friction force at the following angles

Angle (degrees)	Friction (Newtons)
12
25
50
75

 

 

 

 

c) Explain how changing the size of the inclines angle effects the size of the friction force.

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8) Inclined Plane

Question : How does increasing the angle of the ramp effect the acceleration of the

body?

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9. Newton's Second Law Experiment - Walter Fendt,

Set the mass of the wagon (M) to the following values and record the acceleration in the chart below

Mass (kg)	Acceleration (m/s^2)
25
50
100
200

What is the mathematical relationship between M and a for the object in this simulation?

Direct? Direct Square? Inverse? Inverse Square? Explain________________________________

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10.  Air Track Simulation

a) Which color car is the faster right after the first collision for each of the following initial settings?

Setting	Red or Blue?  or SAME
m1 = m2
m1 = 3m2
3m1 = m2

b) After the collision, which car is is given the greater acceleration? The one with the greater mass or the one with less mass? (remember, acceleration means the rate at which something changes velocity - acceleration or deceleration)

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Energy

Energy Potential Gravitational

Pendulum

This applet let's you change the mass and length of a pendulum. When the pendulum swings its motion is turned into a wave. 

QUESTION: Vary the length of the pendulum.  What is the the relationship between the length of the pendulum and its period?

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